how to reduce algae growth on surface?

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maxjohnson
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Joined: Thu Dec 12, 2019 12:16 am
Location: OH zone 6

how to reduce algae growth on surface?

#1

Post: # 117072Unread post maxjohnson
Sun Feb 25, 2024 3:36 pm

What do you to to prevent green algae from growing too much on the surface of potting mix? What do you spray on the surface and not harm the seedling and germination rate?

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worth1
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Location: 25 miles southeast of Waterloo Texas

Re: how to reduce algae growth on surface?

#2

Post: # 117077Unread post worth1
Sun Feb 25, 2024 4:27 pm

10 percent solution of home use hydrogen peroxide and water in a spray bottle might help and it won't hurt the plants.
It will also stop damping off.
Worth
25 miles southeast of Waterloo Texas.

You can't argue with a closed mind.
You might as well be arguing with a cat.

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Cole_Robbie
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Re: how to reduce algae growth on surface?

#3

Post: # 117083Unread post Cole_Robbie
Sun Feb 25, 2024 5:06 pm

I usually cover seeds in vermiculite to sprout them, and then having the top layer of media be loose and dry helps against algae. Perlite or sand would be similar. And bottom watering also helps.

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bower
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Location: Newfoundland, Canada

Re: how to reduce algae growth on surface?

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Post: # 117092Unread post bower
Sun Feb 25, 2024 6:21 pm

I always take algae as a sign it's too acid - sprinkle of lime works.
AgCan Zone 5a/USDA zone 4
temperate marine climate
yearly precip 61 inches/1550 mm

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